This circuit generates noise pulses for audio equipment probes. The circuit is from a 90’s 303 Circuits. The operational amplifier is an input FET type.
Based on Allegro's A6275, this circuit controls the brightness of various displays. The circuit is valid...
This small transmitter can act as a wireless microphone operating in the medium wave range,...
This is the circuit of an RCA Dimmer sold in 1967. With it it is possible to control a load up to...